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All Journal Journal Serambi Engineering (JSE) Jurnal Teknik Sipil
Dewi Fitria Marlisa
Universitas Malikussaleh
Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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Mechanical Properties and Microstructural Characterization of Paper Produced from Rice Straw–Waste Paper Pulp Blends via Ethanol Organosolv Process Aisyah Protonia Tanjung; Nadya Yunisa Fahmi; Dewi Fitria Marlisa; Maisarah; Lusyana Eka Wardani; Misbul Hadi; Rahmatun Maula
Jurnal Serambi Engineering Vol. 11 No. 3 (2026): Juli 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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The utilization of lignocellulosic agricultural waste as an alternative raw material for paper production offers a sustainable approach to reducing dependence on wood-based pulp. This study investigated the mechanical properties and microstructural characteristics of paper produced from blends of rice straw organosolv pulp and recycled waste paper pulp at a 1:1 ratio using 15 wt% polyvinyl acetate (PVAc) as binder. Sixteen paper samples were prepared under various ethanol concentrations (15–60 wt%) and cooking times (60–120 min). Mechanical characterization included tensile strength, elongation of break, and Young’s modulus, while surface morphology was analyzed using Scanning Electron Microscopy (SEM). The tensile strength ranged from 2.06 to 4.22 MPa, elongation of break from 6.00 to 16.06%, and Young’s modulus from 0.155 to 0.529 MPa. All samples satisfied the minimum tensile strength requirement of SNI 14-6519-2001. SEM observations revealed that higher tensile strength was associated with denser and more homogeneous fiber networks with fewer voids and surface defects. The optimum tensile strength was achieved at 30 wt% ethanol and 60 min cooking time, indicating favorable fiber bonding and structural integrity.
Efektivitas Nanokomposit MOF–Biochar Terhadap Perbaikan Sifat Fisika–Kimia Tanah Sawah Pascasedimentasi Banjir Di Aceh Utara Aisyah Protonia Tanjung; Dewi Fitria Marlisa; Anni Zulfia; Alvin Hidayat; Agus Adelia
Teras Jurnal : Jurnal Teknik Sipil Vol. 16 No. 2 (2026): Teras Jurnal (September 2026)
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v16i2.1439

Abstract

Abstrak   Sedimentasi banjir mendegradasi lahan sawah di Aceh Utara melalui perubahan pH, peningkatan bulk density, dan penurunan porositas tanah. Penelitian ini bertujuan menguji efektivitas nanokomposit MOF–Biochar sebagai amandemen untuk memulihkan sifat fisika–kimia tanah sawah pascasedimentasi banjir. Sampel tanah diambil pada empat kedalaman (0–10, 10–20, 20–30, 30–40 cm) di Desa Alue Jamok, Kecamatan Baktiya, Aceh Utara, menggunakan Rancangan Acak Kelompok satu faktor (kontrol, biochar, MOF, dan nanokomposit MOF–Biochar) dengan tiga ulangan pada skala uji pot. Nanokomposit disintesis melalui in-situ growth solvothermal synthesis dari MIL-101(Fe) dan biochar sekam padi. Empat parameter diukur (pH, EC, bulk density, porositas total) dan dianalisis ANOVA satu arah. Seluruh perlakuan berbeda nyata pada setiap kedalaman (p < 0,05). Nanokomposit MOF–Biochar meningkatkan pH 17,5%, menurunkan EC 58,4%, menurunkan bulk density 25,2%, dan meningkatkan porositas 72,2% dibandingkan kontrol, sekaligus mengoreksi kelemahan biochar tunggal yang meningkatkan salinitas. Nanokomposit ini berpotensi menjadi dasar teknologi pemulihan tanah sawah pascabencana.   Kata kunci: bulk density, nanokomposit MOF–Biochar, remediasi tanah, sedimentasi banjir, tanah sawah   Abstract   Flood-induced sedimentation degrades paddy fields in North Aceh through changes in soil pH, increased bulk density, and reduced porosity. This study evaluated a MOF–Biochar nanocomposite as an amendment to restore the physical–chemical properties of flood-sediment-buried paddy soil. Soil was sampled at four depths (0–10, 10–20, 20–30, 30–40 cm) in Alue Jamok Village, Baktiya, North Aceh, using a single-factor Randomized Block Design (control, biochar, MOF, MOF–Biochar nanocomposite) with three replications at pot scale. The nanocomposite was synthesized via in-situ growth solvothermal synthesis from MIL-101(Fe) and rice husk biochar. Four parameters (pH, EC, bulk density, total porosity) were analyzed by one-way ANOVA. All treatments differed significantly at every depth (p < 0.05). The nanocomposite raised pH by 17.5%, lowered EC by 58.4%, reduced bulk density by 25.2%, and increased porosity by 72.2% versus control, while correcting the salinity increase caused by biochar alone. This nanocomposite offers a promising basis for post-disaster paddy soil recovery technology.   Keywords: bulk density, flood sedimentation, MOF–Biochar, paddy soil, soil remediation
Co-Authors Agus Adelia Aisyah Protonia Tanjung Alvin Hidayat Anni Zulfia Lusyana Eka Wardani Maisarah Misbul Hadi Rahmatun Maula Yunisa Fahmi, Nadya